Watch Class Movie

teacher Prep

Lab sheet & activites

Class Movie

Watch Class Movie

Class Movie

Teacher Prep Movie

Lab Materials Needed

Blockey Koa Crate

from Kea STEMCrate

- 1 Springy Spring Scale per student

Student Lab Sheet

Nervous system

 "I'll try the stapler next, it's probably not going to work-oh wait it did...Wow! "

 

   Student - 6th grade.

Link to paper

Conductors and Insulators

Understanding the basic principles of electricity will help you understand and relate to how our nervous system works. The nervous system is quite literally an electrical system, and it obeys all the same principles of electricity that your test circuit does. Electricity must flow in a loop.  The direction electricity flows in is from negative to positive, and electricity flows through conductors and is held back by insulators. Did you know that your nerves have a positive and a negative end? Wow!

Watch Class Movie

Class Movie

teacher Prep

Teacher Prep Movie

Teacher Edition Lab Sheet

Lab Assistant

Lab sheet & activites

Student Lab Sheet

Lab Materials Needed

Electricity Koa STEMCrate

- 3 whiney wires per student

                (100 clip wires)

- 1 Nova Light per student

                 (30 Lights)

- 2 paper clips per student

- 1 rubber band per student

- Various materials to test for conductivity

-Teacher Demo and smart board illustrations below

Build your Test Circuit

You will need:

One Battery

one rubber Tube

2 paper clips

three Whiney Wires

one Nova (Light)

And Various test materials

Microscope Observation 

Peripheral nerves are a lot like computer cords

TEacher Class Demo of Salt Water Conductivity  

Build this circuit 

Attach Whiney to the paper clips 

 

* If your Teacher Demonstration Circuit does not work, check the following:

 

-  Try Testing the circuit with one battery to make sure you can light the bulb.  

 

-  Add a second AA battery to your circuit. If the bulb does not light, your battery might be wired backwards. swap the leads on one of the batteries.  Batteries are connected with opposing + and - terminals.  You will need two batteries to use the circuit in salt water.

 

Make sure battery leads fit tightly - You may need to wiggle the paperclips to adjust for a good connection.

 

 

Salt (NaCl) is made of Sodium (Na) and Chlorine (Cl). Sodium is a metal, and when salt is dissolved into water, the sodium particles cause the water to conduct electricity. Our body uses the Sodium from salt to make our nervous systems work. The tiny bubbles you see are hydrogen gas made from breaking the bonds of water when the electricity passes through it.

Class Movie

Class Movie: Show in Class to students to begin the lab activity

Teacher Prep Movie

Teacher Prep Movie: Teacher Training for Lab